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Subsequent Events (Details) - Orbitz - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2014	Feb. 12, 2015
Subsequent Event [Line Items]
Potential Contract Exit Termination Payments Owed	$ 115.0
Subsequent Event [Member]
Subsequent Event [Line Items]
Sale of Stock, Price Per Share		$ 12.00
Expedia, Inc. [Member]
Subsequent Event [Line Items]
Potential Contract Exit Termination Payments Owed	$ 57.5

X

- Definition

Termination payments made during the period relating to the early termination of an agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	expe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=expe_OrbitzMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	expe_CompanyAxis=expe_ExpediaInc.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: